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Interfacial Magnetic Domain Wall Formation in Perpendicular-Anisotropy, Exchange-Spring Films



Shannon Watson, T. Hauet, Julie A. Borchers, S Mangin, Eric E. Fullerton


Using magnetometry and polarized neutron reflectometry (PNR), we have mapped the reversal processes of the antiferromagnetically coupled, hard/soft system, TbFeCo/[Co/Pd(tpd)}15⁠, with perpendicular anisotropy. The magnitude of the exchange coupling within the [Co/Pd] layer can be tuned by varying Pd thickness. Since PNR is insensitive to moments perpendicular to the plane, a scattering geometry with polarization parallel to the scattering vector was used to isolate in-plane magnetization components and characterize the behavior of a domain wall near the bilayer interface. Consistent with predictions from a micromagnetic calculation, the characteristics of the domain wall vary with field and exchange stiffness in the Co/Pd⁠.
Applied Physics Letters


polorized neutron reflectivity, Perpendicular media, Co/Pd Superlattices


Watson, S. , Hauet, T. , Borchers, J. , Mangin, S. and Fullerton, E. (2008), Interfacial Magnetic Domain Wall Formation in Perpendicular-Anisotropy, Exchange-Spring Films, Applied Physics Letters, [online],, (Accessed April 17, 2024)
Created May 19, 2008, Updated March 22, 2024